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. 2019 Feb 28;15(2):e1006285. doi: 10.1371/journal.pcbi.1006285

Fig 1. The organization of the basal ganglia.

Fig 1

Circles denote neural populations in the areas indicated by labels next to them, where D1 and D2 correspond to striatal neurons expressing D1 and D2 receptors respectively, STN stands for the subthalamic nucleus, GPe for the external segment of globus pallidus, and Output for the output nuclei of the basal ganglia, i.e. the internal segment of globus pallidus and the substantia nigra pars reticulata. Arrows and lines ending with circles denote excitatory and inhibitory connections respectively.